Abstract:This paper focuses on introducing a modular cascaded battery energy storage system and establishing a mathematical model for both the AC and DC sides of the energy storage system. Based on this, a corresponding control strategy is proposed. To achieve a specific trade-off between switching times and output harmonics, a new hybrid modulation strategy (NHPWM) is proposed that combines the characteristics of NLM and CPS-PWM commonly used in traditional modular cascaded topologies. With this hybrid modulation stra… Show more
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